Question

Find the area of a circle whose diameter is:

i) 8.4 cm ii) 5.6 m iii) 7 km​

Answer 1

Answer:

Area of circle = πr²

i) r = 8.4cm

Area of circle ↓

→ 22/7×(8.4)²

→221.76 cm²

ii) r = 5.6 m

Area of circle ↓

→22/7×(5.6)²

→98.56m²

iii) r = 7km

Area of circle ↓

→22/7×(7)²

→154km²